Customer Reviews for Onslaught FastCap Spider and Scorpion Insecticide

I have been doing my own pest control for years and have struck with a handful of insecticides- obviously living in Arizona, scorpions have always been a species I target. I've had good success with the products I have used but started to notice that either the scorpions were building a tolerance or the insecticides were losing potency quicker as I began finding scorpions inside my garage where I rarely ever saw them before, after only two weeks from last application. After my four year old was stung by a scorpion in the garage and had to be taken to the hospital, a friend suggested the Onslaught Fast cap. I purchased a bottle- mixed and applied as instructed. The following day I walked around the outside of the house and can only describe what I saw as the Angel of death had passed over- dead scorpions, dead spiders, dead roaches, dead earwigs, dead moths and even some dead flies. Needless to say I was sold as this product works and will continue to use it.

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8 of 9 people found this review helpful

Awesome product..Kill bugs deadddd

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7 of 8 people found this review helpful

Great for initial knock down. But the residual is horrible. I introduced this product with my company a month ago. But the call backs have been off the charts. I shelved this product for now. If I get a call for a serious spider infestation I will use it. But thats only if I can spray the spider directly.

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7 of 9 people found this review helpful

I tried all the products sold to kill scorpions over the last year and a half and nothing killed them until I got this stuff. They are still getting in my house but I'm finding them dead all except one! I hope with continued spraying I'll get rid of them all together.

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6 of 6 people found this review helpful

This is a good product and I would like to have access to larger size container (1 gal.)

  Expert response:
Thank you for your comments! There is usually a larger size available in the Onslaught FastCap Insecticide. Please call us at 866-581-7378 M-F 9a-5p EST for details.

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6 of 8 people found this review helpful

I am allergic to spider bites also we have a cat and 2 dogs our animals are inside as they are all part of our family. Fleas and ticks are a constant problem during warm weather. The onslaught works so well that I have to apply 1 time a year and we are completely free of fleas and ticks and spiders are definitely diminished we are not spider free but definitely diminished. So for a little over a hundred bucks a year we and our animals are living much more comfortable

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6 of 8 people found this review helpful

Been using this every month or two for about a year. Noticed less scorpions, but not sure if that is due to me smashing them or this killing them. I'd say I'm down to about 3/4 what I had last year. Knock down does not work. I spray the beasts and then run around for a good 10 minutes and never die. I just went out tonight after spraying 2 weeks ago and counted about 8 scorpions on the walls and ground exactly where I sprayed.

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6 of 8 people found this review helpful

I purchased a log home in the North Georgia mountains, an area notorious for scorpions and spiders. The previous owner did not use any pest control. Needless to say the home was full of scorpions and the exterior was covered with spiders. I started treating the home internally and externally with Onslaught for three months, I applied the applications every 30 days. I also used Nyguard IGR in the applications. After the second application I noticed scorpions & spiders in and around the home, they were all dead or were in the process of dying. Now six months later, no scorpions, no spiders. As a side benefit, this stuff also acted as a preventative to stop carpenter bees from boring holes in my logs or wasps nesting under my eves. This stuff really works.

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5 of 5 people found this review helpful

Almost immediately when we treated around our house & shop, house flies, crickets & spiders left the vicinity & have barely been back. That was about 2 weeks ago & we've only seen an occasional wolf spider. I retreated areas again 2 days ago. We are impressed with this product & it left no residue where we sprayed indoors & no offensive odor. Will definitely purchase again.

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5 of 5 people found this review helpful

I have been using Onslaught FastCap for over two years. My home had a problem with scorpions and we sometimes find them inside. I would spray everywhere inside my garage as well as a 5-foot perimeter around my home up the side and out along the ground...it works. It last for about 3-months. Although it did not totally eradicate the scorpions issue I do see less scorpions because this stuff kills the bugs that scorpions eat. When you use this product in conjunction with cleaning up debris around your home like fallen leaves and piles of trash or wood you will greatly reduce their population.

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5 of 6 people found this review helpful

This insecticide lives up to his claim. i washed my house, followed up with a good spray of Fastcap from a battery operated atv sprayer so i could spray 16ft. vertically. Not one spider, or wasp has returned. I have a corrugated tin ceiling on a out-door kitchen where dozens of "dirt dobbers" were getting in building nests. it's been a few weeks, and not one single wasp. it has a great staying power. Word of caution, due to the overhead spraying,I got drift sprayed on my face and arms on three occasions, and went and hosed off with soap, about 4 hours later,I was burning on both face and hands. so protect yourself with proper PPE.

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5 of 5 people found this review helpful

We bought a new double-wide manufactured home and had it set up during the cold months of winter on vacant land in Porterville, Ca. that had never been disturbed. As soon as the weather warmed up the scorpions moved in, and we were finding 3-4 inside the house every day. I did my research on the specific species of scorpion and their preferred food sources (earwigs), and which pesticides were most effective. Then I sealed the interior of the house where the pipes, waterlines, conduit, vents, windows, etc. provided access. The website DoMyOwnPestControl had lots of extremely helpful advice as well, which I followed. I started the first month with 1oz/gal Fastcap mixed with NyGuard IGR. (The growth regulator being an integral part of the program, applied once every 6 months.) I quite liberally sprayed indoors and out, from roof to ground as well as a good soaking under the house. In the first month I found 2 dying scorpions indoors and with a blacklight searching outside after full dark I spot sprayed about 2 dozen along the foundation. Next month I used the Demon WP insecticide mixed at the higher concentration as directed. Third month I alternated back to the original Fastcap, then DemonWP the fourth month, and this month the Fastcap again. Next month I'll use the Fastcap along with the NyGuard IGR. So far I have had ZERO scorpions, ZERO ticks, ZERO fleas, ZERO spiders or insects of any kind in my home. I see dead water bugs which live in the soil, along with a few dead beetles along the outside of the house along the skirting on occasion, but nothing alive. I now spray monthly inside along floorboards, under appliances, along window frames and under sinks, as well as outside. As long as they sell it I'll use it!!

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5 of 5 people found this review helpful

This stuff works great! Recommend by another person that uses it for scorpions. Once dry it is pet and kid safe. You won't see one scorpion, black widow, brown recluse, or anything else. Eventhought the scorpions and spiders seemed to eat everything else. No more ant hills either. I spray about every 3 months to keep the bugs away. I only spray outside very thoroughly and never see anything. Every situation is different so you may need to spay less or more often. Get a UV light to check every month at night for scorpions. They are the strongest pest to kill so they always come back first then I know I need to spray again. But it keeps them away for months when nothing else works. Much cheaper than any pest control guy. And most of the time they won't have the right spray to get scorpions. Thus gets them all!

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5 of 6 people found this review helpful

Due to hurricane harvey rainfall, my home was crawling with crickets which drew in the scorpions. Had local pest control company come in and retreat entire perimeter and still had scorpions crawling on foundation and porches. They told me to give it time to work and i told them that stuff they put out isn't even slowing down the crickets much less the scorpions. Sprayed Onslaught on porches and foundation and results were almost instant. Overnight there were numerous dead and dying scorpions and hundreds of dead crickets. These were the largest scorpions I've seen here, very healthy!! They were no match for Onslaught. Pest control company said to give it time to work but with scorpions, i want immediate results. The same night they sprayed their stuff, i saw scorpions running around on my porches. After spraying onslaught, the only scorpions I've seen are the good kind. Dead scorpions!!!!

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5 of 6 people found this review helpful

We live in SW FL where everything grows, fast and continuously. So first things first, I did NOT do this by myself. The folks at DMO have provided guidance on everything from WHAT I may I have, to how to get rid of it and when to do it. e.g. I had lots of big bugs both inside and outside but outside was the most pressing. For example lots of Fire Ants that were biting friends, neighbors, kids, spouses. Not good. DMO Suggested Bifen XTS with a sprayer and I got started. It worked great and we have not had fire ants for 7 years. It killed a lot of other lawn and shrub bugs as well. That worked so well I asked about indoors. Onslaught Fast Cap has done just as well inside. Virtually no more bugs inside the house. If you have a lanai I use Bifen on the screens and around the pool area and now my wife no longer complains of spiders and their webs. These folks are very well informed, willing to help you and have good products as well.

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5 of 5 people found this review helpful

I've been using another product (Cyzmic CS) for years with good success. But, I wanted to have a second option so I could rotate usage. My main targets here in Nevada are roaches, scorpions and spiders. I like that the Onslaught Fastcap specifically targets spiders and scorpions. So far all I've seen are a couple of dead roaches. No scorpions or spiders at all.

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5 of 6 people found this review helpful

I've captured around 60 in the last 10 years. And tested different products and recommended remedies. Remedies do not work. FastCap is about the best I've tried/tested, 1 ounce per gallon they die in around 3 to 5 days. However the first day after exposure they are incapacitated, slow down, can't move well, they look dead. But if you disturb them, claws out, tail up, ready to go to war. 2 ounces per gallon, they're not feeling too good after the first exposure. Normally dead with in the first day to a few hours. FastCap works for me. You will never get rid of them. you will always find strays. My friends two old boy was stung. He started foaming at the mouth. He was rushed to the ER, he almost died. He was in the hospital for three days. I hope this info helps. Good luck.

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5 of 5 people found this review helpful

Onslaught Fastcap is my go to product for all insect issues. The label covers a wide range of insects and application usage. The immediate knockdown effect paired with the residual effect makes this my hands down favorite. I have had success using this on roaches (oriental, American, and German), bed bugs, ants, spiders, and centipedes. Since I began using Onslaught Fastcap I have not had a single call back. After the inspection is complete Onslaught Fastcap is the first thing that you should reach for to put in your integrated pest management plan.

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5 of 5 people found this review helpful

Excellent to spray around the perimeter of the house o keep pest out in the summer months.

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4 of 7 people found this review helpful

We recently built our house outside of San Antonio in the Texas Hill Country and were experiencing infestations of scorpions and spider. After just spraying once around a he perimeter of the house and yard, we found several spiders and scorpions dead or nearly dead. Just follow the instructions and use a little of the Cyzmic CS as recommended and that should do the deed. We've used Terminix for several years and they have not been able to keep up with all the critters now that summer has arrived. We will probably cancel our contract with Terminix. Onslaught Fastcap Scorpion and Spider got rid of all bugs in and outside of our beautiful home. My wife was worried about our 10 month baby boy getting stung by a scorpion as he crawls around the house. But that is no longer the case. I have recommended this product to all my neighbors, friends, family and to our builder. This stuff works!

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4 of 4 people found this review helpful

We see way less scorpions than before I started using this product. I pay a company for monthly service, but was seeing just to many scorpions in my home. We had a different company come out and sealed our house. That took care of the scorpions getting in, but still saw them a lot of them outside. Started using this product and the number of scorpions outside has been reduced.

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4 of 4 people found this review helpful

I love this stuff. I know it mainly treat scorpion spiders but this stuff will kill anything on contact. I bought it because I have a major problem with spiders. It's been 2 weeks later and I am still finding dead bugs all over the house and mainly in the basement. When I sprayed around the base of the house I found a bunch of dead " Black Widow Spiders", so know that it will kill other types of spiders. I would definitely buy this stuff again and I would recommend it, highly... Another great thing about this spray is the fact that it does not have a smell like most sprays, which I love ... I can spray and I don't have to deal with the strong unbearable smell.. Good stuff!

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4 of 4 people found this review helpful

i flip flop between onslaught and cykick cs. so far this summer Ive only found one bark scorpion and I live in the the Estrella Mountains.

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4 of 4 people found this review helpful

Within a month, I have sprayed 2xs and continue to wipe down cob webs?? Will not buy this product again

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4 of 5 people found this review helpful

Our son bought an older home that had not had a pest control agreement on it for a few years. They had a terrible scorpion problem. After treating with Onslaught FastCap they have only seen a couple over several months. This is a wonderful treatment for all kinds of bugs. We have made a second order. We don't want to run out of this.

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3 of 3 people found this review helpful

This product is amazing to kill scorpions, we see the results right after we spray and it is good for at least 6 weeks especially if there is no rain. Don't know what we would have done without this product. Scorpions have become a big problem in our neighborhood and we are able to control them with this spray. I just order another 2 bottles.

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3 of 3 people found this review helpful

I would give 5 stars for the service. Shipping was fast. I can only give 4 stars on the product because I've not had time to see how good a residual it is and I used it closer to the end of higher pest season (used it 2nd half of Oct. at mothers home in Bullhead city, AZ). It did prove effective on crickets around the house. I like that it dried clear on base boards and walls (no staining paint). I would reccomend it and look forward to using it again.

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3 of 5 people found this review helpful

First time I've found dead scorpions after spraying the day before. It's now been three weeks and have not seen a scorpion, was finding them every other night ... so seems good product. p.s.. also seems to have worked on the earwigs !!

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3 of 5 people found this review helpful

I mixed up a gallon of this and was blown away at how well it stopped ALL bugs. This stuff is the real deal. So far 2 weeks in and it's working like day 1. Anyone saying this stuff doesn't work must be using it incorrectly.

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3 of 3 people found this review helpful

I tried tried this product since I didn't want to pay a monthly service for something I can do myself. It had good reviews, so I gave it a try. Measuring cup built in makes it super easy to mix. Product does great killing bugs and no staining or visual residue. Verdict is still out on killing scorpions, I don't have a infestation I've seen about five and I killed them using backlight, but since I sprayed I have seen 2 more so not so sure about scorpions hence the 4 stars, but it kills the flying and American roaches! All in all a great economical product vs $30 + monthly service.

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2 of 3 people found this review helpful